KR20090088578A - Resin composition su khem characteristic scale removal tax administration me - Google Patents

Abstract

A cleaning agent is provided to reduce pollution by strongly dissolving resinous scale accumulated in a developer bath and a nozzle, to prevent facilities or parts from being rusted, and to ensure excellent cleaning workability. A cleaning agent for removing a resin composition scum scale comprises glycol ether-based component 15~65 weight%, organic acid component 10~35 weight%, and water 25~50 weight% but excludes amine-based and surfactant material components. The organic acid component is at least one selected from acetic acid, oxalic acid, sulfamic acid, hydroxy acetic acid, propionic acid, salicylic acid, citric acid, malic acid and sorbic acid.

Description

Resin composition su khem characteristic scale removal tax administration me}

The present invention relates to a cleaning agent for cleaning or washing a device or facility for manufacturing various resin products and electronics, a dry film developing bath (DFR bath), and more particularly, a developing tank and nozzles and pipes related thereto. Corrosion to cleaned equipment and parts such as nozzles and pipes while being more powerful and densely cleaned in removing scum scales of resin compositions by mixing photoresist film resins generated on the back and inorganic salt chemicals used as developers. The present invention relates to a resin composition scum descaling agent that can improve cleaning efficiency as well as being environmentally friendly and improving cleaning efficiency.

In general, from small products such as mobile phones and digital cameras to home appliances such as computers, televisions, telephones, and automobiles, we can find many products using resins around us.

Many different resinous products, produced as finished or intermediate products, are subjected to several cleaning or cleaning processes during their manufacture.

Let's take a look at the printed circuit board PCB that is common in these various products.

The PCB is a printed circuit board that functions as a pedestal as a circuit pattern for mounting various components in the final finished product and electrically connecting the mounted components.

Such PCBs also come in a variety of types, including single-sided, double-sided, and multi-layer PCBs. Among these, multilayer PCBs, which are frequently used in accordance with the development of technology, include inner circuit printing, inner layer etching and resist stripping, lamination, hole processing, plating, circuit pattern printing, outer layer etching and resist, solder mask printing, outline processing, inspection, etc. It is usually produced in order.

In addition, a thermosetting resin such as an acrylic resin and an inorganic salt chemical used as a developer are mixed in the development process of the PCB manufacturing process to generate a scum scale in the developing tank and related nozzles and pipes. They must be cleaned to increase the life of the equipment and to improve the development efficiency of the dry film photoresist (DFR).

In addition to the development tank (DFR), various devices, equipment, and facilities related to the manufacture of resin products or electronic products should be cleaned or cleaned to improve the quality of products and to improve the defect rate. It is often used.

Here we look at some of the conventional literature relating to cleaning or cleaning.

[Patent 1] Korean Patent Application No. 2005-14317 (name of the invention: an amine oxide surfactant and a cleaning composition containing the same), KR 10-2006-0093471 A 2006.08.25.

[Patent 2] Republic of Korea Patent Application No. 2003-83797 (name of the invention: cleaning agent and composition for cleaning fluorescent membrane screening including emulsion), KR 10-2005-0050004 A 2005.05.27.

In [Document 1], an amine oxide having a dialkyl amide chain (di-alkyl amide chain) which can be used for cleaning agents having both mild cleaning property, fiber softening effect, and antistatic effect has improved mildness. A description is made of an amine oxide type surfactant and a cleaning composition using the same.

In addition, [Document 2] relates to a cleaning agent for screening out and removing a defective film from a fluorescent film process and an emulsion film process, a cleaning composition including the same, and a fluorescent film regeneration method including an emulsion using the same. The cleaning agent comprises sodium xylenesulfonate, EDTA-4Na, propyleneglycol, and triethanol amine. The selective cleaning composition used in the process of selectively washing the membrane to regenerate the interlayer includes 50% to 60% pure water, 30% to 50% hydrogen peroxide, 1% to 2% ammonia water, and the cleaning agent (KCRUKA # R-300). It is characterized by including 2% to 5%.

However, conventional cleaning or cleaning solvents are a common reflection to damage the developing tank in use. In general, some of the equipment, equipment, and facilities that need to be cleaned or cleaned are made of acrylic or PVC, and the cleaning agent or cleaning agent damages the basic container bath.

In addition, it is important to dissolve completely in order to perform the cleaning in a dense manner. Conventional cleaning or cleaning solvents are based on the concept of peeling rather than dissolving, which causes damage to devices, facilities, and facilities, and eventually the defective rate of the finished product. Will increase.

In addition, the conventional product is based on the organic solvent (ether-based, ether type) of organic solvent (acid solvent) and the acid (acid) material to remove the scale of the resin and scum, which is used as a base material The acid substance group can use substances such as hydrochloric acid, sulfuric acid, nitric acid, acetic acid, formic acid and the like of inorganic acids, and mostly use sulfuric acid or nitric acid. In particular, a large number of products use nitric acid as a base material (base), and this type of product is treated by an appropriate wastewater treatment method in consideration of the detergent used in the waste liquid treatment after use. It is difficult to treat wastewater because it is not treated well with environmental regulations.

In addition, conventional washing or cleaning solvents generate environmental pollutants in the process of use, and as described in the above-mentioned [Document 1] and [Document 2], in particular, washing or cleaning based on amine-based (amine) compounds. Cleaning solvents contain many harmful environmental substances.

In addition, the preparation of the cleaning agent includes a surfactant that is often reflected. In this case, since a lot of bubbles are generated when washing or descaling various devices or facilities that require cleaning or cleaning, a lot of working time is required. It also has problems that cause environmental problems.

In addition, since these ingredients are included, the conventional product is required to warm the temperature to 40 ~ 50 ℃ to increase the cleaning power when cleaning or cleaning the device or equipment, which is acid fume when using the product In some cases, acid gas (acid gas) may corrode nozzles or pipes, and may be a major cause of secondary pollution.

Accordingly, the cleaning agents of the prior art have a resin composition scum scale generated in a developing tank and a nozzle and a pipe related thereto, which are mixed with a thermosetting resin such as an acrylic resin and an inorganic salt chemical used as a developing solution during a development process of a PCB manufacturing process. There is an undesirable problem in cleaning.

The present invention has a strong solvent in removing resin composition scum composition scales generated and accumulated in developing tanks and nozzles by inorganic salt chemicals, but does not have a risk of corrosion by the cleaning agent and has excellent cleaning workability. The purpose is to provide a cleaner.

Another object of the present invention is not only to exhibit a strong cleaning power without using any environmentally harmful substances such as amines and surfactant components, but also to prevent environmental pollution in advance, it is environmentally friendly, and reused until the cleaning effective ingredient is exhausted. It is intended to be able to significantly reduce the cleaning cost by having economic feasibility.

The resin composition scum descaling detergent of the present invention for achieving the above object comprises 15 to 65% by weight of a glycol ether component, 10 to 35% by weight of an organic acid component, and 25 to 50% by weight of water. It is created.

In this case, it is important that the resin composition scum descaling detergent of the present invention is formulated without including an amine (amine) substance component.

In addition, in the resin composition scum-scale scrubbing agent of the present invention, the glycol ether component material is ethylene glycol _ monoethyl ether, butyl carbitol, propylene glycol _ methyl ether acetate, dipropylene glycol _ monoethyl ether, tri Ethylene glycol, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, propylene glycol monoalkyl ether, and propylene glycol monopropyl ether.

In addition, the organic acid component is acetic acid (oxalic acid), oxalic acid (oxalic acid), sulfamic acid (sulfamic acid), glycolic acid (hydroxy acetic acid), propionic acid (propionic acid), salicylic acid (salicylic acid), citric acid (citric acid) ), Malic acid (maric acid), sobic acid (sorbic acid) has a characteristic comprising any one or more.

Therefore, the scum-based scrubbing agent of the resin composition of the present invention, which is previously formulated or prepared by the salping character, has the following important effects.

First, it does not contain harmful substances such as phenols, benzene compounds, N-hexane, Tri Chloro Ethylene (TCE) and chloro-based compounds. The product has a high toxic smell with less toxic smell and can prevent additional secondary pollution, thus reducing environmental pollution.

Second, it is possible to use without inconvenience when removing the resinous scale generated and accumulated in various devices, facilities, developing tanks, nozzles, etc., and shows excellent cleaning power even at room temperature. In addition, acid gas is not generated during warming, which significantly reduces the risk of secondary corrosion in metal machinery and equipment, and PCB copper plate products.

Third, it has strong cleaning and penetrating power, so it dissolves the resin scale from the developing tank and nozzle after washing so that it significantly reduces pollution and does not damage the developing equipment.

Fourth, it does not contain amine-based materials or surfactants, reducing the occurrence of bubbles and shortening the working time, thus providing the effect of improving the working conditions and environment of workers.

Next, it can be used repeatedly (about 3 to 4 times) continuously until the active ingredient contained in the cleaning agent of the present invention is exhausted. As a result, the cleaning cost is less than that of the conventional one, which is very economical and improves internal and external competitiveness. It will provide a possible effect.

If more detailed description of the resin composition scum descaling detergent according to an embodiment of the present invention.

The cleaning agent for scale removal of the resin composition according to the present embodiment is composed of 15 to 65% by weight of a glycol ether component, 10 to 35% by weight of an organic acid component, and 25 to 50% by weight of water.

The amine included in the conventional detergent for the purpose of understanding the present invention is an organic compound containing nitrogen derived from ammonia, as is already known, and is a generic term for a compound obtained by replacing a hydrogen atom in ammonia with a hydrocarbon.

According to the number of hydrocarbon groups substituted here, it is classified into primary amine (R-NH ₂ ), secondary amine (R-NH-R), and tertiary amine (R ₃ -N). Aliphatic amine (Aliphatic amine) and when one or more of the hydrocarbon group is an aryl group is called an aromatic amine (Aromatic amine) and a typical one is aniline. An amine can be manufactured by the method of reacting alkyl halide and ammonia, the method of reducing nitro compound nitrile, etc., the method of adding bromine and an alkali to an acid amide, and the like.

First, lower aliphatic amines, such as methylamine, are produced when plants and animals decay. Lower aliphatic amines smell like ammonia and are soluble in water, but the higher the odor, the weaker the smell. Aromatic amines are liquids or solids that are insoluble in water and have a characteristic odor. Aliphatic amines show weak basicity similar to ammonia and aromatic amines show weaker basicity. Because of this basicity, they react with acids to form salts. These salts are called ammonium salts.

Industrially, such amines have a wide range of applications such as rubber, dyes, pharmaceuticals, synthetic resins, and fibers, and most of them contain amines to increase water solubility.

However, these amines have strong irritation to the skin and mucous membranes, and are easily absorbed from the skin, and systemic symptoms such as headaches, nausea, anxiety, and fainting, as well as inhalation of the nose, pharyngeal mucosa and organs. It stimulates the bronchus, causing coughing, causing respiratory distress, and the highly volatile amine causes the vapor to irritate the eyes, causing tears, resulting in conjunctivitis and membrane edema.

High concentrations of steam directly irritate the skin and cause chemical dermatitis and dermatitis secondary by sensitizing the skin. Contact with liquids can damage the cornea of the eye and result in permanent visual impairment, causing chemical burns on the skin. Therefore, when the amine liquid enters the eyes and comes into contact with the skin, it is necessary to rinse immediately with running water.

Looking at with respect to the present invention, the resin composition scum descaling detergent of the present embodiment does not contain the amine-based (amines) material component. Therefore, the conventional cleaning agent or cleaning agent containing an amine-based substance has a strong odor, but the resin composition scum descaling detergent does not emit such a strong odor so that the worker's working environment and healthy life can be maintained. give.

In addition, as will be understood in the process to be described later, the detergent for scum scale removal of the resin composition of the present embodiment does not include a surfactant as a composition component conventionally included in conventional cleaning agents.

The inclusion of surfactants in the preparation of detergents creates a lot of foam during cleaning or descaling of equipment or equipment. This not only makes it difficult for the workers, but also lengthens the working time. In particular, since it is necessary to wash several times in order to remove bubbles after washing, the work is very cumbersome and difficult work, leading to very inefficient and avoiding work.

However, the resin composition scum-based scrubbing agent of the present embodiment is less foaming during the cleaning operation, less environmental pollution and reduces the working time of workers.

Next, each component substance which comprises this resin composition scum descaling detergent is grasped | ascertained, respectively.

First, the glycol ether component enhances penetration and dissolves the resinous scale almost completely. The organic acid component dissolves the salt scale in an alkaline developer and adjusts the hydrogen ion concentration (PH).

In forming the present resin composition scum descaling detergent, the glycol ether component material and the organic acid component material may be added to include not only one but also any one or more of the corresponding components.

As the glycol ether-based substance, ethylene glycol _ monoethyl ether, butyl carbitol, propylene glycol _ methyl ether acetate, dipropylene glycol _ monoethyl ether, triethylene glycol, ethylene glycol _ monomethyl ether, ethylene glycol _ monobutyl One or more selected from ether, propylene glycol monoalkyl ether, propylene glycol monopropyl ether and the like.

Organic acid components include acetic acid, oxalic acid, sulfamic acid, glycolic acid, propionic acid, salicylic acid and citric acid. acid), malic acid, sorbic acid, and the like.

The following is a composition of the resin composition scum-based scrubbing agent according to one preferred embodiment of the present invention selected by selecting a few of the above described each component material, the composition of the components in detail as follows.

<Example>

① Butyl carbitol [2- (2-butoxy ethoxy) ethanol] 25 wt%,

② 15% by weight of propylene glycol methyl ether acetate

③ 15% by weight of dipropylene glycol mono methyl ether [DIpropylene glycol mono methyl ether]

④ 10% by weight of hydroxy acetic acid,

⑤ 10 wt% sulfamic acid,

⑥ 35% by weight of water.

In this composition example, butyl carbitol, propylene glycol _methyl ether acetate, dipropylene glycol _ monomethyl ether as glycol ether component materials, hydroxy acetic acid and sulfamic acid as organic acid components. ) Shows the case where each is adopted. As described above, when a substance having the component is selected and selected as necessary, a resin composition scum descaling agent having a higher cleaning rate can be formed.

The resin composition scum descaling detergent of the present embodiment, prepared as described above, is a colorless or colorless liquid with a high transparency close to no color, and its specific gravity is 1.04 ± 0.03 when the room temperature is 20 ° C. Hydrogen ion concentration (PH) is characterized by 1.2 ± 0.7.

In addition to the above embodiments, in order to enhance the technical properties and effects of the resin composition scum-based scrubbing agent of the present invention, a composition example having various component ratios is prepared and washing experiments, acid gas generation, odor, environmental pollution, etc. In addition, experiments were conducted on the presence of residues at the time of washing and the secondary pollution of acid gas.

Composition Example 1 Prepared by adding 15% by weight of nitric acid * to a glycol ether-based material component.

Composition Example 2 Prepared by adding 15% by weight of hydrochloric acid * to the glycol ether-based material component.

Composition Example 3 Formulated by adding 15% by weight of sulfuric acid * to a glycol ether material component.

Composition 4 Preparation by adding glycolic acid * 15% by weight to a glycol ether material component.

Composition Example 5 Ether based: glycolic acid: amine based: 55: 15: 30 wt%.

Composition Example 6 Ether: Glycolic acid: Other ether-based material = 55: 15: 30% by weight.

Composition Example 7 Ether based: glycolic acid: surfactant = 80: 15: Prepared at 5% by weight.

As a result of the above experiment, the composition examples 4 and 6 of the composition examples that can be an embodiment of the present invention, the cleaning efficiency is better than the other embodiments, there is no acid gas and odor generation, environmental pollution and acid gas It shows good results without secondary pollution and no residue when washed. When looking at the composition No. 5 in which amines used in the conventional cleaning agents were added, the experimental results showed good cleaning efficiency, but generated a lot of acid gases and odors. It can be seen that pollution and acid gas secondary pollution are caused. In the seventh composition example in which the surfactant is added, the water washing state shows a poor result, so that the cleaning agent according to the present invention can achieve good cleaning, There is no odor and no residue such as foam at the time of washing, and no secondary pollution such as environmental pollution and corrosion by acid gas. Is to know that the cleaner.

Therefore, an example in which the developing tank is cleaned using the resin composition scum descaling detergent of the present embodiment will be described.

㉮ First, completely remove the developer or water in the developing tank with a hose or the like.

상기 Inject the composition to the top of the contaminated part of the developing bath.

㉰ The composition is circulated by a pump.

순환 After 30 minutes of circulation, open the lid to confirm that the contamination has been removed, and if the contamination has not been completely removed, circulate again for another 30 minutes and make sure that the contamination has been completely removed. The composition is put back into the drum.

㉲ Fill the developing tank with water, circulate for 10 minutes, and then treat the solution with wastewater (alkali wastewater).

채우 Fill with water and circulate for 20 minutes.

㉴ Finally, fill the water once more, circulate 30 minutes and drain to complete the cleaning process.

The cleaning operation as described above is not only easy and consistent, but also generates little foam or odor, so that the working environment of the working worker is improved and brought to a good state, thereby increasing the work efficiency and improving the work environment.

And the resin composition scum descaling cleaning agent according to the present invention is not limited to the above embodiments, it is possible to formulate a component material exhibiting similar characteristics, respectively, according to a certain ratio, such as the general knowledge in the field of the present invention Those with a variety of modifications can be made, and these various embodiments will be said to belong to the scope of the present invention.

Claims (4)

15 to 65% by weight of a glycol ether component, 10-35% by weight of organic acid components, A resin composition scum-based scrubbing agent, comprising 25 to 50% by weight of water. The method of claim 1, A resin composition scum descaling cleaner, comprising: an amine-based and surfactant-free component. The method of claim 1, The glycol ether component material is ethylene glycol _ monoethyl ether, butyl carbitol, propylene glycol _ methyl ether acetate, dipropylene glycol _ monoethyl ether, triethylene glycol, ethylene glycol _ monomethyl ether, ethylene glycol _ monobutyl ether And a propylene glycol monoalkyl ether or a propylene glycol monopropyl ether. The method of claim 1, The organic acid component is acetic acid, oxalic acid, sulfamic acid, glycolic acid, hydroxy acetic acid, propionic acid, salicylic acid, citric acid ), Malic acid (maric acid), sobic acid (sorbic acid) any one or more of the scum composition descaling detergent for the resin composition.